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From: bugzilla-daemon@libre-soc.org
To: libre-riscv-dev@lists.libre-riscv.org
Subject: [libre-riscv-dev] [Bug 324] create POWER9 DIV pipeline
Date: Thu, 28 May 2020 06:51:35 +0000
Message-ID: <bug-324-13-xcd8CVxmO9@https.bugs.libre-soc.org/> (raw)
In-Reply-To: <bug-324-13@https.bugs.libre-soc.org/>

https://bugs.libre-soc.org/show_bug.cgi?id=324

Jacob Lifshay <programmerjake@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|CONFIRMED                   |IN_PROGRESS

--- Comment #6 from Jacob Lifshay <programmerjake@gmail.com> ---
I added a Rust model for the div and rem instructions as well as converted the
output format to JSON since that's waay easier to ingest than the custom output
format I had before. The model matches the native POWER9 instructions for all
the cases I tested.

I also added conditional compilation code that allows running just the model on
any computer rather than just on POWER9:
Run it with:
cargo run --no-default-features

Model functions:
https://salsa.debian.org/Kazan-team/power-instruction-analyzer/-/blob/master/src/instr_models.rs

This should make it easier to copy the behavior of POWER9 in the nmigen div
pipeline.

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  parent reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-19 12:03 [libre-riscv-dev] [Bug 324] New: " bugzilla-daemon
2020-05-19 12:04 ` [libre-riscv-dev] [Bug 324] " bugzilla-daemon
2020-05-19 12:16 ` bugzilla-daemon
2020-05-20  0:21 ` bugzilla-daemon
2020-05-22 21:03 ` bugzilla-daemon
2020-05-22 22:58 ` bugzilla-daemon
2020-05-26  3:55 ` bugzilla-daemon
2020-05-28  6:51 ` bugzilla-daemon [this message]
2020-05-28 10:03 ` bugzilla-daemon
2020-06-10  7:00 ` bugzilla-daemon
2020-06-10 11:00 ` bugzilla-daemon
2020-06-10 11:32 ` bugzilla-daemon
2020-06-10 18:29   ` Jacob Lifshay

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